Kungani sicwaninga ngemvelaphi yeSARS-CoV-2, amalebhu ezokuvikela kanye nocwaningo lwe-GOF

Phrinta imeyili Ungahlukıselana Ephathwayo

Bheka IBiohazards Blog ukuthola izibuyekezo kuphenyo lwethu, futhi siyathumela imibhalo evela kuphenyo lwethu lapha. Bhalisela lapha ukuthola izibuyekezo zamasonto onke. 

NgoJulayi 2020, i-US Right to Know yaqala ukuletha izicelo zamarekhodi omphakathi ngenhloso yokuthola imininingwane evela ezikhungweni zomphakathi ngemizamo yokuthola okwaziwayo ngemvelaphi yenoveli coronavirus SARS-CoV-2, edala lesi sifo i-Covid-19. Selokhu kuqale ukubheduka eWuhan, abakwaSARS-CoV-2 babulale abantu abangaphezu kwesigidi, ngenkathi begulisa ezinye izigidi ngobhadane lomhlaba oluqhubeka nokuvela.

Siphenya nezingozi, ukuvuza nokunye ukwenzeka emalabhorethri lapho kugcinwa khona futhi kuguqulwe izifo ezinamandla eziwubhadane, kanye nezingozi zezempilo zomphakathi zocwaningo lwe-gain-of-function (GOF), olubandakanya ucwaningo lokuthuthukisa izici zokusebenza kwamagciwane abulalayo , njengomthamo wegciwane, ukusuleleka kanye nokusabalalisa.

Umphakathi wesayensi womphakathi nowomhlaba wonke unelungelo lokwazi ukuthi iyiphi idatha ekhona ngalezi zindaba. Sizobika lapha noma yikuphi ukutholakala okuwusizo okungavela ocwaningweni lwethu.

I-US Right to Know iqembu lokucwaninga eliphenya ngokugxila ekubonakaleni kwezempilo yomphakathi.

Kungani senza lolu cwaningo?

Sikhathazekile ngokuthi izinsizakusebenza zokuphepha zikazwelonke e-United States, China nakwezinye izindawo, kanye neyunivesithi, izimboni kanye nezinhlangano zikahulumeni abasebenzisana nazo, kungenzeka zinganikeli isithombe esiphelele nesithembekile ngemvelaphi ye-SARS-CoV-2 nobungozi yocwaningo lokuthola umsebenzi.

Ngocwaningo lwethu, sifuna ukuphendula imibuzo emithathu:

  • Yini eyaziwayo ngemvelaphi yeSARS-CoV-2?
  • Ngabe zikhona izingozi noma iziphithiphithi ezenzekile ezikhungweni zokucwaninga nge-biosafety noma ze-GOF ezingakabikwa?
  • Ngabe kukhona ukukhathazeka mayelana nezingozi zokuphepha eziqhubekayo zamalabhorethri okuphepha noma ucwaningo lwe-GOF olungakabikwa?

Uyini umsuka weSARS-CoV-2?

Ngasekupheleni kukaDisemba 2019, edolobheni laseWuhan, eChina, kwavela izindaba zesifo esibulalayo esithathelwanayo esibizwa nge-COVID-19, esidalwe yiSARS-CoV-2, i-coronavirus yenoveli eyayingaziwa ukuthi ibikhona phambilini. Imvelaphi yeSARS-CoV-2 ayaziwa. Kunemicabango emibili eyinhloko.

Abaphenyi kumanethiwekhi ochwepheshe ahlobene ne Isikhungo se-Wuhan se-Virology (WIV) futhi Umanyano we-EcoHealth, i-US non-profitthat ine kutholwe izigidi zamadola kwizibonelelo ezikhokhelwa ngabakhokhi bentela kuya sebenzisana no I-WIV ocwaningweni lwe-coronavirus, babe ezibhaliwe ukuthi igciwane lenoveli kungenzeka ukuthi yavela ngokukhethwa kwemvelo ezindaweni zezilwane, nge inqolobane yayo kumalulwane. Lokhu "Zoonotic" umsuka i-hypothesis yaphinde yaqiniswa ngu izimangalo ukuthi ukuqubuka okusha kwe-coronavirus kuqale kufayela le- “Izilwane zasendle” emakethe eWuhan, the Imakethe yokudla kwasolwandle yaseHuanan, lapho kungenzeka khona ukuthi kuthengiswe izilwane ezingase zitheleleke. (Noma kunjalo, okungenani ingxenye eyodwa kwezintathu yeqoqo lokuqala leziguli ezinegciwane, kufaka phakathi icala lokuqala elaziwa kakhulu lokutheleleka kusuka ngoDisemba 1, 2019, lalingaxhumananga ngqo noma ngokungaqondile nababekhona emakethe yezilwane zasolwandle yabantu nezilwane.)

I-zoonosis hypothesis njengamanje iyi-hypothesis yemvelaphi ekhona. Kodwa-ke, imvelaphi ye-zoonotic ye-SARS-CoV-2 inayo kepha isazomiswa ngokuqinisekile, futhi abanye abacwaningi baveze ukuthi kusekelwe eziphikisanayo kokuma ukuthi zidinga ukuqhubeka kophenyo.

Ngokuqhubeka nokufunda ngalezi zihloko, bheka uhlu lwethu lokufunda: Uyini umsuka weSARS-CoV-2? Ziyini izingcuphe zokucwaninga ngomsebenzi?

Abanye ososayensi baye basikisela umbono ohlukile wemvelaphi; bacabanga ukuthi i-SARS-CoV-2 ingumphumela we ngengozi ukukhishwa kohlobo lwasendle noma i-lab-modified uhlobo lokuhlobene eduze Igciwane elifana ne-SARS ebigcinwe ezikhungweni zokuvikela ukuphepha ezenza ucwaningo lwe-coronavirus eWuhan, njenge-WIV noma iZikhungo ze-Wuhan zokuLawulwa nokuVinjelwa kwezifo.

Okubaluleke kakhulu, isimo esivela kumalabha asisho ukuthi asiyifaki i-zoonosis hypothesis ngoba i-SARS-CoV-2 ingaba umphumela wokulungiswa kwelebhu okwenziwe ngezinhlobo ezingabikwanga ze-bat coronaviruses ezingabiki ze-SARS igcinwe ku-WIV, noma ukuqoqwa nje kanye nokugcinwa kwama-coronaviruses anjalo. Abagxeki ye-lab-origin hypotheses iyichithile le mibono njenge ukuqagela okungenabufakazi futhi izinkolelo zendlovu.

Kuze kube manje, kukhona hhayi kwanele ubufakazi ukwenqaba ngokuphelele imvelaphi ye-zoonotic noma i-lab-Origin hypotheses. Siyazi, ngokususelwa kuzindatshana zocwaningo ezishicilelwe futhi Izibonelelo zikahulumeni wase-US ku-EcoHealth Alliance yokuxhasa ucwaningo lwe-WIV coronavirus, leyo WIV igcinwe amakhulukhulu wama-coronaviruses angaba yingozi akwa-SARS, futhi enziwe Ukuhlolwa kwe-GOF kuma-coronaviruses ngokubambisana namanyuvesi ase-US, futhi kwakukhona ukukhathazeka ngokuphepha nge I-WIV's BSL-4 laboratory.

Kepha kuze kube manje, akukabi khona ukucwaningwa okuzimele kwamarekhodi kanye nemininingwane yolwazi lweWIV, futhi kunolwazi oluncane mayelana nokusebenza kwangaphakathi kweWIV. I-WIV isusile kwimininingwane yayo yewebhusayithi njenge ukuvakashelwa konozakuzaku besayensi baseMelika ngonyaka wezi-2018, Futhi ivale ukufinyelela kwi-database yayo yamagciwane futhi amarekhodi elabhorethri izivivinyo ze-coronavirus ezenziwa ososayensi be-WIV.

Ukuqonda umsuka weSARS-CoV-2 kunemithelela ebalulekile yenqubomgomo yezinhlelo zomphakathi zezempilo nezokudla. Imvelaphi engaba khona ye-zoonotic yakwaSARS-CoV-2 iyaphakama imibuzo mayelana nezinqubomgomo ezithuthukisa ukunwetshwa kokusebenza kwezolimo ezimbonini kanye nemfuyo, okungaba yizimbangela ezinkulu ze ukuvela kwamagciwane enoveli kanye ne-pathogenic kakhulu, ukugawulwa kwamahlathi, ukulahleka kwezinhlobonhlobo zemvelo kanye nokuhlaselwa kwemvelo. I- kungenzeka ukuthi i-SARS-CoV-2 ingahle ivele kulabhorethri ye-biodefense imibuzo mayelana ukuthi kufanele yini unalezi zinsiza, lapho kugcinwa khona futhi kuguqulwe okwenziwe ngama-microbial pathogen akhiqizwa endle.

Noma ngabe i-SARS-CoV-2 iguqulwe ilebhu noma cha, uphenyo lwelab-origin-theorists luphakamisa imibuzo ebalulekile mayelana nokushoda obala maqondana nocwaningo ngamagciwane abangelwa ubhubhane, kanye nezinto ezibalulekile kanye nabadlali abakha izindawo zokuvikela ukuphepha ezanda kakhulu lapho amagciwane ayingozi ekhona igcinwe futhi yaguqulwa ukuze ibenze babulale kakhulu.

Ingabe ucwaningo lokuthola umsebenzi lufanele ingozi?

Kukhona okuphawulekayo ubufakazi ukuthi amalabhorethri okuphepha okuvikela ukuphepha kokuphila abe nokuningi izingozi, ukwephulwa, Futhi ukwehluleka kokuqukethwe, nokuthi izinzuzo ezingaba khona zocwaningo lokuthola umsebenzi may akufanelekile the izingozi kokubangela izifo ezingaba khona.

Ucwaningo lwe-GOF lokukhathazeka lushintsha futhi luhlole amagciwane ayingozi njenge-Ebola, igciwane lesifo somkhuhlane i-H1N1, kanye nama-coronaviruses ahlobene no-SARS ngaphansi kwerubrikhi yokwenziwa kwezinyathelo zokulwa nezokwelapha (njengemithi yokugoma). Ngenxa yalokho, inesithakazelo hhayi kuphela ku- umkhakha we-biotechnology kanye nowokwenza imithi kepha futhi ukuze umkhakha we-biodefense, ephathelene nokusetshenziswa okungenzeka kocwaningo lwe-GOF ngezenzo ze-biowarfare.

Ucwaningo lwe-GOF ngamagciwane abulalayo yi- Staff umphakathi impilo. Imibiko kokuvuza ngengozi nokwephulwa kokungavikeleki ezindaweni zokucwaninga ze-GOF akuvamile. Ngemuva kokuthi iqembu elivelele lama-virologists lishicilele okuphuthumayo isitatimende sokuvumelana ngoJulayi 14, 2014 ecela ukuthi kumiswe ucwaningo lwe-GOF lokukhathazeka, uhulumeni wase-US ngaphansi kokuphatha kukaMongameli uBarack Obama wabeka umthetho  "Ikhefu lezezimali" ekuhlolweni kwe-GOF okubandakanya amagciwane ayingozi, kufaka phakathi ama-coronaviruses namagciwane omkhuhlane.

Ukuphumula kwemali kahulumeni ocwaningweni lokukhathazeka nge-GOF kwasuswa ngo-2017 ngemuva kwesikhathi lapho uhulumeni wase-US enza khona uchungechunge lwezingxoxo ukuhlola i- izinzuzo nezingozi kuhlotshaniswa nezifundo ezibandakanya ucwaningo lwe-GOF lokukhathazeka.

Ifuna ukwenza izinto obala

Sikhathazekile ngokuthi imininingwane ebaluleke kakhulu kunqubomgomo yezempilo yomphakathi mayelana nemvelaphi ye-SARS-CoV-2, kanye nezingozi zamalabhorethri okuphepha kanye nocwaningo lomsebenzi, kungafihlwa kumanethiwekhi e-biodefense wezinsiza zokuphepha zikazwelonke ze-United Amazwe, iChina, nakwezinye izindawo.

Sizozama ukukhanyisa ngalezi zindaba ngokusebenzisa izicelo zamarekhodi womphakathi. Mhlawumbe sizophumelela. Singahluleka kalula. Sizobika noma yini ewusizo esingayithola.

USainath Suryanarayanan, PhD, ungusosayensi wabasebenzi e-US Right to Know futhi ungumbhali ngokubambisana wale ncwadi, “Izinyosi Ezinyamalalayo: Isayensi, Ezombusazwe kanye ne-Honeybee Health”(Rutgers University Press, 2017).