JP5537893B2 - Anti-influenza virus type A - Google Patents
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Description
本発明は抗インフルエンザウイルスA型剤に関する。詳しくは、天然素材を用いた抗インフルエンザウイルスA型剤に係るものである。
The present invention relates to an anti- influenza virus type A agent. Specifically, it relates to an anti- influenza virus type A agent using natural materials.
ウイルスは、他の生物の細胞を利用して、自己を複製させることができる微小な構造体であり、タンパク質の殻とその内部に詰め込まれた核酸からなる。
また、ウイルスのうち例えばインフルエンザウイルスは、人に感染して、伝染病であるインフルエンザを起こすウイルスである。
Viruses are microscopic structures that can replicate themselves using cells of other organisms, and are composed of a protein shell and a nucleic acid packed inside the protein shell.
Among viruses, for example, influenza virus is a virus that infects humans and causes contagious influenza.
また、ウイルスの感染の過程で宿主細胞から遊離し、また吸着されるように粒子が露出する過程がある。そのような局面に対して塩素系消毒剤やヨード剤などが使用されるが、それら既存の薬剤は環境保全、生体への安全性、刺激性、金属腐食、異臭、持続性などの問題を抱えており、実際には適用に限界がある。 In addition, there is a process in which particles are exposed so that they are released from and adsorbed by host cells during the process of virus infection. Chlorine disinfectants and iodine agents are used for such situations, but these existing drugs have problems such as environmental protection, safety to the living body, irritation, metal corrosion, off-flavor, and sustainability. In practice, there are limits to application.
そこで、天然素材を用いた抗ウイルス剤が求められていた。
例えば特許文献1には、茶ポリフェノールを有効成分とするインフルエンザイウイルス感染予防剤が記載されている。
また、特許文献2には、茶サポニンを有効成分とする抗インフルエンザウイルス剤が記載されている。
さらに、特許文献3には、茶葉から抽出したタンニン物質と単糖もしくは多糖との結合体を有効成分として含有する植物ウイルス阻害剤が記載されている。
Therefore, antiviral agents using natural materials have been demanded.
For example, Patent Literature 1 describes an influenza virus infection preventive agent containing tea polyphenol as an active ingredient.
Patent Document 2 describes an anti-influenza virus agent containing tea saponin as an active ingredient.
Furthermore, Patent Document 3 describes a plant virus inhibitor containing a conjugate of a tannin substance extracted from tea leaves and a monosaccharide or polysaccharide as an active ingredient.
しかしながら、植物由来の天然素材のうち抗ウイルス活性を有するとして知られているものは、茶由来の天然素材に限られ、より広い範囲の病原性ウイルスに対抗するには、他の植物種から抗ウイルス剤を探索することが望まれていた。 However, plant-derived natural materials that are known to have antiviral activity are limited to tea-derived natural materials. To combat a wider range of pathogenic viruses, anti-viral activity from other plant species. It has been desired to search for viral agents.
本発明は、以上の点に鑑みて創案されたものであり、抗インフルエンザウイルスA型効果が高いと共に、生体に対して安全に使用できる抗インフルエンザウイルスA型剤を提供することを目的とする。
The present invention has been made in view of the above points, and an object of the present invention is to provide an anti- influenza virus type A agent that has a high anti- influenza virus type A effect and can be safely used for a living body.
本発明者は、上記の課題を解決するために鋭意研究した結果、モミの葉から抽出された成分が、抗ウイルス剤の薬効成分として有効であることを見出して本発明を完成するに至った。
すなわち、本発明の抗ウイルス剤は、モミの葉の抽出物を含む。
As a result of diligent research to solve the above-mentioned problems, the present inventors have found that the components extracted from fir leaves are effective as medicinal components of antiviral agents, and have completed the present invention. .
That is, the antiviral agent of the present invention contains a fir leaf extract.
また、本発明の抗ウイルス剤は、モミの葉の抽出物の乳化されたものを含む。 Moreover, the antiviral agent of this invention contains the emulsified thing of the extract of a fir leaf.
ここで、抽出物が乳化されているので、例えば簡易型スプレーによって抗ウイルス剤を散布することができる。 Here, since the extract is emulsified, the antiviral agent can be sprayed, for example, by a simple spray.
また、本発明の抗ウイルス剤において、抽出物は、ボルニルアセテートと、カンフェンと、ピネンと、リモネンとを含むことが好ましい。
また、本発明の抗ウイルス剤において、抽出物の全量基準で、ボルニルアセテートと、カンフェンと、ピネンと、リモネンとの合計量が90質量%以上であることが好ましい。
また、本発明の抗ウイルス剤において、抽出物は、抽出物の全量基準で、30質量%以上のボルニルアセテートを含むことが好ましい。
In the antiviral agent of the present invention, the extract preferably contains bornyl acetate, camphene, pinene, and limonene.
In the antiviral agent of the present invention, the total amount of bornyl acetate, camphene, pinene, and limonene is preferably 90% by mass or more based on the total amount of the extract.
In the antiviral agent of the present invention, the extract preferably contains 30% by mass or more of bornyl acetate based on the total amount of the extract.
また、上記の目的を達成するために、本発明の抗ウイルス剤の製造方法は、モミの葉から水蒸気蒸留によって抽出物を抽出する抽出工程と、該抽出工程によって抽出された抽出物を乳化する乳化工程とを有する。 Moreover, in order to achieve said objective, the manufacturing method of the antiviral agent of this invention emulsifies the extraction process which extracts the extract by steam distillation from a fir leaf, and the extract extracted by this extraction process An emulsification step.
ここで、水蒸気蒸留によって抽出を行なうことによって、充分にモミの抽出物を抽出することができる。
また、抽出物を乳化することによって、乳化液状の抗ウイルス剤を得ることができ、例えば簡易型スプレーによって抗ウイルス剤を散布することができる。
Here, the fir extract can be sufficiently extracted by performing the extraction by steam distillation.
Moreover, an emulsified liquid antiviral agent can be obtained by emulsifying the extract. For example, the antiviral agent can be sprayed by a simple spray.
本発明に係る抗インフルエンザウイルスA型剤は、抗インフルエンザウイルスA型効果が高いと共に、生体に対して安全に使用できる。 The anti- influenza virus type A agent according to the present invention has a high anti- influenza virus type A effect and can be safely used for a living body.
本発明の抗ウイルス剤は、モミの葉の抽出物を含む。また、本発明の抗ウイルス剤は、モミの葉の抽出物の乳化されたものを含む。 The antiviral agent of the present invention contains an extract of fir leaves. Moreover, the antiviral agent of this invention contains the emulsified thing of the extract of a fir leaf.
また、モミは、ロシア極東地方に広く分布している常緑針葉樹である。針葉をいっぱい付けた房枝からは、いわゆるモミ精油が抽出できる。その房枝は約2〜2.5%の精油を含んでいるが、精油含有量は蒸留時間、モミの育った環境、樹齢などによって異なる。この精油含有量は松の5倍、カラマツの9倍にあたる。
なお、モミ精油(モミの葉の抽出物)は、モミの木の下打ちした枝葉や、伐採したモミの木の枝葉から水蒸気蒸留によって得られるので、モミ精油を抽出することで、森林の荒廃を招くことにはならない。すなわち、資源の有効利用につながり、ひいては森林労働者の収入アップにもなる。
Fir is an evergreen conifer widely distributed in the Russian Far East. The so-called fir essential oil can be extracted from the tufts full of needles. The bunch contains about 2 to 2.5% essential oil, but the essential oil content varies depending on the distillation time, fir growing environment, tree age, and the like. This essential oil content is 5 times that of pine and 9 times that of larch.
In addition, fir essential oil (fir leaf extract) is obtained by steam distillation from the foliage under the fir tree and the foliage of the cut fir tree. Extracting fir essential oil will cause devastation of the forest It doesn't matter. In other words, it leads to the effective use of resources, which in turn increases the income of forest workers.
また、モミ精油には、揮発成分が多く、このためソフトで、早くかつ効果的に人間の器官に作用する。また、モミ精油の成分には、35〜45種類の生体活性物質が含まれている。クロマトグラフ法などで分析すると、100種類以上の活性物質が検出されているが、まだ特定できていない成分もある。特定された成分をいくつか挙げてみると、ボルニルアセテート、α−ピネン、カンフェン、β−ピネン、リモネン、ミルセンなどが挙げられる。また、モミ精油の全量基準で、ボルニルアセテートと、カンフェンと、ピネンと、リモネンとの合計量は90質量%以上であることが好ましい。
また、ボルニルアセテートを含んでいる植物は、モミとトドマツのみであるが、ボルニルアセテートを多く含有する植物はモミのみである。
Also, fir essential oil has many volatile components, so it works softly and quickly and effectively on human organs. Moreover, the component of fir essential oil contains 35-45 types of bioactive substances. When analyzed by a chromatographic method or the like, 100 or more kinds of active substances have been detected, but there are some components that have not yet been identified. Some of the identified components include bornyl acetate, α-pinene, camphene, β-pinene, limonene, myrcene and the like. The total amount of bornyl acetate, camphene, pinene, and limonene is preferably 90% by mass or more based on the total amount of fir essential oil.
In addition, fir and todomatsu are the only plants containing bornyl acetate, but only fir is a plant containing a large amount of bornyl acetate.
また、モミ精油は、モミ精油の全量基準で、30質量%以上のボルニルアセテートを含有することが好ましい。 The fir essential oil preferably contains 30% by mass or more of bornyl acetate based on the total amount of fir essential oil.
また、モミ精油は、モミ精油の全量基準で、10質量%以上のカンフェンを含有することが好ましい。
また、モミ精油は、モミ精油の全量基準で、25質量%以上のα−ピネンを含有することが好ましい。
また、モミ精油は、モミ精油の全量基準で、15質量%以上のβ−ピネンを含有することが好ましい。
また、モミ精油は、モミ精油の全量基準で、5質量%以上のリモネンを含有することが好ましい。
Moreover, it is preferable that fir essential oil contains 10 mass% or more of camphene on the basis of the total amount of fir essential oil.
Moreover, it is preferable that fir essential oil contains 25 mass% or more alpha-pinene on the basis of the total amount of fir essential oil.
Moreover, it is preferable that fir essential oil contains 15 mass% or more of β-pinene based on the total amount of fir essential oil.
Moreover, it is preferable that fir essential oil contains 5 mass% or more of limonene on the basis of the total amount of fir essential oil.
図1は、本発明の抗ウイルス剤を製造する工程の一例を説明する概略図である。
枝打ちした新鮮なシベリア産のモミの葉を採取して、モミの葉を水蒸気蒸留装置に投入する(ステップS1)。
そして、水蒸気を発生させ、モミの葉を蒸して水蒸気蒸留を行なう(ステップS2)。
次に、水蒸気によって抽出された蒸気分を冷却して液体を容器に集め、容器内の上層部に溜まったモミ精油(モミの葉の抽出物)を得る(ステップS3)。
さらに、得られたモミ精油を乳化装置において乳化し、モミ精油の乳化液を得る(ステップS4)。
FIG. 1 is a schematic diagram illustrating an example of a process for producing the antiviral agent of the present invention.
Pruned fresh Siberian fir leaves are collected, and the fir leaves are put into a steam distillation apparatus (step S1).
And water vapor | steam is generated, fir leaf is steamed and water vapor | steam distillation is performed (step S2).
Next, the vapor component extracted by the water vapor is cooled and the liquid is collected in a container to obtain fir essential oil (fir leaf extract) accumulated in the upper layer of the container (step S3).
Furthermore, the obtained fir essential oil is emulsified in an emulsifying device to obtain an emulsified liquid of fir essential oil (step S4).
[インフルエンザウイルス不活化試験]
シベリア産のモミの葉を水蒸気蒸留して抽出されたモミ精油105mlと、精製水3000mlを撹拌タンクに投入し、さらにこれらを乳化装置において乳化し、得られたモミ精油の乳化液を検体とした。
次に、得られた検体1mlにインフルエンザウイルスのウイルス浮遊液0.1mlを添加して混合し、作用液を得た。そして、室温で作用させ、開始から1時間後、および開始から24時間後に、細胞維持培地を用いて作用液を10000倍に希釈して、作用液のウイルス感染価を測定した。作用温度は室温であった。また、比較対照として、精製水についても同様にウイルス浮遊液を添加混合し、室温で作用させ、作用開始時、開始から1時間後、および開始から24時間後に、作用液のウイルス感染価を測定した。
また、精製水の作用開始直後のウイルス感染価を、作用液の作用開始時のウイルス感染価とした。結果を表1に示す。
なお、予め予備試験を行ない、ウイルス感染価の測定方法について検討したところ、細胞維持培地で作用液を10000倍に希釈することにより、検体の影響を受けずにウイルス感染価を測定できることを確認した。
[Influenza virus inactivation test]
105 ml of fir essential oil extracted by steam distillation of fir leaves from Siberia and 3000 ml of purified water were put into a stirring tank, and these were emulsified in an emulsifier, and the resulting emulsified fir essential oil was used as a specimen. .
Next, 0.1 ml of a virus suspension of influenza virus was added to 1 ml of the obtained specimen and mixed to obtain a working solution. Then, it was allowed to act at room temperature, and after 1 hour from the start and 24 hours after the start, the working fluid was diluted 10,000 times using a cell maintenance medium, and the virus infection titer of the working fluid was measured. The working temperature was room temperature. As a comparative control, the virus suspension was also added and mixed with purified water and allowed to act at room temperature. The virus infection titer of the working solution was measured at the beginning of the action, 1 hour after the start, and 24 hours after the start. did.
The virus infectivity titer immediately after the start of the action of purified water was defined as the virus infectivity titer at the start of the action of the working fluid. The results are shown in Table 1.
A preliminary test was conducted in advance to examine the method for measuring the virus infectivity titer. As a result, it was confirmed that the virus infectivity titer can be measured without being affected by the specimen by diluting the working fluid 10,000 times in the cell maintenance medium. .
また、ウイルス感染価は次のようにして測定した。
すなわち、細胞増殖培地を用い、使用細胞を組織培養用マイクロプレート(96穴)内で単層培養した後、細胞増殖培地を除き細胞維持培地を0.1mlずつ加えた。次に、作用液の希釈液0.1mlを4穴ずつに接種し、37℃±1℃の炭酸ガスインキュベーター(CO2濃度:5%)内で4〜7日間培養した。培養後、倒立位相差顕微鏡を用いて細胞の形態変化(細胞変性効果)の有無を観察し、Reed−Muench法により50%組織培養感染量(TCID50)を算出して、作用液1ml当たりのウイルス感染価、および精製水1ml当たりのウイルス感染価に換算した。
Moreover, the virus infectivity titer was measured as follows.
That is, using a cell growth medium, the cells used were monolayer cultured in a tissue culture microplate (96 wells), and then the cell growth medium was removed and 0.1 ml of cell maintenance medium was added. Next, 0.1 ml of the diluted solution of the working solution was inoculated every 4 holes and cultured in a carbon dioxide incubator (CO 2 concentration: 5%) at 37 ° C. ± 1 ° C. for 4 to 7 days. After culturing, the presence or absence of cell morphological change (cytopathic effect) was observed using an inverted phase contrast microscope, and the 50% tissue culture infectious dose (TCID 50 ) was calculated by the Reed-Muench method. The virus infection titer and the virus infection titer per ml of purified water were converted.
また、ウイルス浮遊液は次のようにして調製した。
すなわち、細胞増殖培地を用い、細胞を組織培養用フラスコ内に単層培養した。
単層培養後にフラスコ内から細胞増殖培地を除き、試験ウイルスを接種した。次に、試験ウイルスに細胞維持培地を加えて37℃±1℃の炭酸ガスインキュベーター(CO2濃度:5%)内で1〜5日間培養した。
培養後、倒立位相差顕微鏡を用いて細胞の形態を観察し、細胞に形態変化(細胞変性効果)が起こっていることを確認した。そして、培養液を遠心分離(3000r/min、10分間)し、得られた上澄み液をウイルス浮遊液とした。
Moreover, the virus suspension was prepared as follows.
That is, using a cell growth medium, the cells were monolayer cultured in a tissue culture flask.
After monolayer culture, the cell growth medium was removed from the flask and inoculated with the test virus. Next, a cell maintenance medium was added to the test virus and cultured in a carbon dioxide incubator (CO 2 concentration: 5%) at 37 ° C. ± 1 ° C. for 1 to 5 days.
After culturing, the morphology of the cells was observed using an inverted phase contrast microscope, and it was confirmed that morphological changes (cytopathic effect) occurred in the cells. The culture solution was centrifuged (3000 r / min, 10 minutes), and the resulting supernatant was used as a virus suspension.
また、試験に用いたウイルスは、インフルエンザウイルスA型(H1N1)である。
また、試験に用いた細胞は、MDCK(NBL−2)細胞 ATCC CCL−34株(大日本製薬株式会社製)である。
また、試験に用いた細胞増殖培地は、イーグルMEM培地「ニッスイ」(1)(日水製薬株式会社製)に牛胎仔血清を10%加えたものである。
また、試験に用いた細胞維持培地は、以下の組成の培地である。
イーグルMEM培地「ニッスイ」(1) 1000 ml
10%NaHCO3 14 ml
L−グルタミン(30g/l) 9.8 ml
100×MEM用ビタミン液 30 ml
10%アルブミン 20 ml
0.25%トリプシン 20 ml
Moreover, the virus used for the test is influenza virus type A (H1N1).
Moreover, the cell used for the test is MDCK (NBL-2) cell ATCC CCL-34 strain (manufactured by Dainippon Pharmaceutical Co., Ltd.).
Further, the cell growth medium used in the test is obtained by adding 10% of fetal calf serum to Eagle MEM medium “Nissui” (1) (manufactured by Nissui Pharmaceutical Co., Ltd.).
Moreover, the cell maintenance medium used for the test is a medium having the following composition.
Eagle MEM medium "Nissui" (1) 1000 ml
14% 10% NaHCO 3
L-glutamine (30 g / l) 9.8 ml
100 x MEM vitamin solution 30 ml
20% 10% albumin
0.25% trypsin 20 ml
表1において、「logTCID50/ml」とは、1ml当たりのTCID50の対数値である。
表1から判るように、検体にインフルエンザウイルス浮遊液を添加して1時間後に、TCID50は7.7から6.7に減少しており、細胞への感染性が10%減少した。さらに24時間後には、TCID50は4.5以下となり、細胞への感染性が検出されなかった。すなわち、「インフルエンザイウイルスが不活化された」と判断された。
In Table 1, “log TCID 50 / ml” is a logarithmic value of TCID 50 per ml.
As can be seen from Table 1, one hour after adding the influenza virus suspension to the specimen, TCID 50 decreased from 7.7 to 6.7, and the infectivity to cells decreased by 10%. After 24 hours, TCID 50 was 4.5 or less, and no infectivity to cells was detected. That is, it was determined that “influenza virus was inactivated”.
以上のように、モミの葉から水蒸気蒸留によって抽出された抽出物(モミ精油)の乳化液は、インフルエンザウイルス浮遊液が添加されて1時間後には細胞への感染性が10%減少し、24時間後には細胞への感染性が検出されないという高い抗ウイルス効果を有し、天然素材であるモミの葉から抽出された抽出物なので、生体に対しても安全に使用できる。 As described above, the emulsified extract (fir essential oil) extracted from fir leaves by steam distillation has a 10% decrease in infectivity to cells one hour after the addition of the influenza virus suspension. Since it has a high antiviral effect that no infectivity to cells is detected after a period of time and is an extract extracted from fir leaves, which is a natural material, it can be safely used for living organisms.
また、モミの葉の抽出物の乳化液は液状であるので、簡易型スプレー等で散布することができ、非常に簡便に使用することができる。 Moreover, since the emulsified liquid of the extract of fir leaves is liquid, it can be sprayed with a simple spray etc. and can be used very easily.
Claims (2)
抗インフルエンザウイルスA型剤。 An anti- influenza virus type A agent containing an emulsified fir essential oil obtained by emulsifying fir essential oil extracted by steam distillation of fir leaves from Siberia .
前記モミ精油の全量基準で、ボルニルアセテートと、カンフェンと、ピネンと、リモネンとの合計量が90質量%以上である
請求項1に記載の抗インフルエンザウイルスA型剤。 The fir essential oil contains 30% by mass or more of bornyl acetate, camphene, pinene, and limonene based on the total amount of the fir essential oil,
The total amount of bornyl acetate, camphene, pinene, and limonene is 90% by mass or more based on the total amount of the fir essential oil.
The anti- influenza virus type A agent according to claim 1 .
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| JP2009237639A JP5537893B2 (en) | 2009-10-14 | 2009-10-14 | Anti-influenza virus type A |
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| US20210275434A1 (en) | 2018-07-20 | 2021-09-09 | Shiseido Company, Ltd. | Virus inactivating agent |
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