DNA damage and biological effects induced by photosensitization with new N1-unsubstituted furo[2,3-h]quinolin-2(1H)-ones
摘要:
New furoquinolinones unsubstituted at the N-1 position were prepared and their photobiological activities we re studied in comparison with 4.6.8.9-tetramethylfuro[2,3-h]quinotin-2(1H)-one (HFQ) and 8-MOP. The anti-proliferative activity of furoquinolinones 3a-f was tested upon UVA irradiation in mammalian cells, studying DNA synthesis and clonal growth capacity. and in micro-organisms, evaluating T2 infectivity. Almost all compounds appeared to be more active than 8-MOP, and free of any mutagenic activity and skin phototoxicity. Among them, compound 3b was the most effective one. Similarly to HFQ, compound 3b appeared to be very active also in DNA damaging, forming monoadducts and DPCL - 0. but no ISC and DPCL > 0, both responsible for furocoumarin genotoxicity and phototoxicity. Moreover, Ehrlich ascites cells, photoinactivated by the new furoquinolinone 3b and injected into recipient mice. proved to be capable of inducing protection against a successive challenge performed with the same tumor cells. For all these features. 3b seemed to be a new promising potential drug for PUVA therapy and photopheresis. (C) 2002 Elsevier Science Ltd. All rights reserved.
METHOD FOR THE PREPARATION OF REAGENTS FOR AMPLIFICATION AND/OR DETECTION OF NUCLEIC ACIDS THAT EXHIBIT NO SIGNIFICANT CONTAMINATION BY NUCLEIC ACIDS
申请人:Infectio Diagnostic (I.D.I.) INC.
公开号:EP1497456A1
公开(公告)日:2005-01-19
Method for the preparation of reagents for amplification and/or detection of nucleic acids that exhibit no significant contamination by nucleic acids
申请人:Picard J. Francois
公开号:US20050037349A1
公开(公告)日:2005-02-17
The present invention decribes reagents free of detectable contaminating nucleic acids for performing highly sensitive and specific nucleic acids amplification and/or detection. It relates to an improvement in the technology of nucleic acid inactivation prior to nucleic acid testing (NAT) in order to prevent false-positive results. Specifically, this invention describes optimized and standardized reagents and ultra-violet treatment to achieve an effective and highly reproducible nucleic acid inactivation prior to NAT without substantially affecting the performance of the assay. More specifically, this nucleic acid inactivation process resulted in a reduction of up to four logs of the background signal associated with the PCR (polymerase chain reaction) amplification of DNA contaminating PCR reagents. This optimized and standardized method is also adaptable for use with NAT technologies other than PCR.
[EN] METHOD FOR THE PREPARATION OF REAGENTS FOR AMPLIFICATION AND/OR DETECTION OF NUCLEIC ACIDS THAT EXHIBIT NO SIGNIFICANT CONTAMINATION BY NUCLEIC ACIDS<br/>[FR] PROCEDE DE PREPARATION DE REACTIFS POUR L'AMPLIFICATION ET/OU LA DETECTION D'ACIDE NUCLEIQUES NE PRESENTANT AUCUNE CONTAMINATION IMPORTANTE PAR DES ACIDES NUCLEIQUES
申请人:INFECTIO DIAGNOSTIC INC
公开号:WO2003087402A1
公开(公告)日:2003-10-23
The present invention decribes reagents free of detectable contaminating nucleic acids for performing highly sensitive and specific nucleic acids amplification and/or detection. It relates to an improvement in the technology of nucleic acid inactivation prior to nucleic acid testing (NAT) in order to prevent false-positive results. Specifically, this invention describes optimized and standardized reagents and ultra-violet treatment to achieve an effective and highly reproducible nucleic acid inactivation prior to NAT without substantially affecting the performance of the assay. More specifically, this nucleic acid inactivation process resulted in a reduction of up to four logs of the background signal associated with the PCR (polymerase chain reaction) amplification of DNA contaminating PCR reagents. This optimized and standardized method is also adaptable for use with NAT technologies other than PCR.