Interactive analysis of mass spectrometry data including peak selection and dynamic labeling

• US 10,546,736 B2
• Filed: 08/01/2018
• Issued: 01/28/2020
• Est. Priority Date: 08/01/2017
• Status: Active Grant

• Current Assignee: Protein Metrics LLC
• Original Assignee: Protein Metrics Inc. (Insightful Science LLC)
• Inventors: Bern, Marshall, Kil, Yong Joo
• Primary Examiner(s): McCormack, Jason L
• Application Number:
  US16/052,506
• Publication Number:
  US 20190043703A1
• Time in Patent Office: 545 Days
• Field of Search: 250281, 250282
• CPC Class Codes: G01N 33/58 involving labelled substances G01N33/53 takes precedence
• CPC Class Codes: G01N 33/6848 Methods of protein analysis involving mass spectrometry
• CPC Class Codes: H01J 49/0036 Step by step routines describing the handling of the data generated during a measurement

Abstract

This invention relates to graphical user-interactive displays for use in MS-based analysis of protein impurities, as well as methods and software for generating and using such. One aspect provides a user-interactive display comprising interactive and dynamic selection of one or more masses and concurrent display of peaks (points) corresponding to that predicted mass value across other displays (MS1, deconvolved mass spectrum, etc.).

Claims

1. A non-transitory machine-readable medium that stores instructions, which, when performed by a machine, cause the machine to perform operations comprising:

receiving a data file comprising mass spectrometry (MS) data for a sample comprising a molecule;

simultaneously displaying a plurality of visual representations derived from the received data, the plurality of visual representations comprising;

a first visual representation comprising estimated or calculated masses from the received data file, a second visual representation comprising a distribution of mass/charge (m/z) values estimated or calculated from the received data file, and a third visual representation comprising a deconvolved mass spectrum estimated or calculated from the received data file;

receiving a user-selected mass value from one of the first visual representation, the second visual representation or the third visual representation; and

displaying a labeled mark corresponding to the selected mass value on one or both of the first and third visual representations, and simultaneously displaying the labeled mark corresponding the selected mass on each of a plurality of sites on the distribution of m/z, wherein the labeled mark corresponds uniquely to the user-selected mass value.

2. The non-transitory machine-readable medium of claim 1, wherein the labeled mark comprises a colored dot.

3. The non-transitory machine-readable medium of claim 1, wherein the labeled mark comprises an annotated colored dot.

4. The non-transitory machine-readable medium of claim 1, wherein receiving the user-selected mass value comprises identifying a mass value from a user-selected region of the second visual representation or the third visual representation.

5. The non-transitory machine-readable medium of claim 4, wherein identifying the mass value from the user-selected region comprises identifying a peak mass value from the user-selected region.

6. The non-transitory machine-readable medium of claim 1, wherein receiving the user-selected mass value comprises identifying a plurality of mass values from a user-selected region of the second visual representation or the third visual representation;

and wherein displaying the labeled mark comprises simultaneously displaying a separate labeled mark corresponding to each of mass values of the plurality of mass values.

7. The non-transitory machine-readable medium of claim 1, wherein receiving the user-selected mass value comprises receiving a plurality of mass values and wherein displaying the labeled mark comprises simultaneously displaying a separate labeled mark corresponding to each of mass values of the plurality of mass values.

8. The non-transitory machine-readable medium of claim 1, wherein displaying the labeled marks corresponding the selected mass on the plurality of sites on the distribution of m/z comprises identifying a maximum amplitude within a predetermined range in the distribution of m/z and displaying the labeled mark on the maximum amplitude for each site of the plurality of sites.

9. A method for interactively displaying mass spectrometry data, the method comprising:

receiving a data file comprising mass spectrometry (MS) data for a sample comprising a molecule;

simultaneously displaying a plurality of visual representations derived from the received data, the plurality of visual representations comprising;

a first visual representation comprising estimated or calculated masses from the received data file, a second visual representation comprising a distribution of mass/charge (m/z) values estimated or calculated from the received data file, and a third visual representation comprising a deconvolved mass spectrum estimated or calculated from the received data file;

receiving a user-selected mass value from one of the first visual representation, the second visual representation or the third visual representation; and

displaying a labeled mark corresponding to the selected mass value on one or both of the first and third visual representations, and simultaneously displaying the labeled mark corresponding the selected mass on each of a plurality of sites on the distribution of m/z, wherein the labeled mark corresponds uniquely to the user-selected mass value.

10. The method of claim 9, wherein the labeled mark comprises a colored dot.

11. The method of claim 9, wherein the labeled mark comprises an annotated colored dot.

12. The method of claim 9, wherein receiving the user-selected mass value comprises identifying a mass value from a user-selected region of the second visual representation or the third visual representation.

13. The method of claim 12, wherein identifying the mass value from the user selected region comprises identifying a peak mass value from the user-selected region.

14. The method of claim 9, wherein receiving the user-selected mass value comprises identifying a plurality of mass values from a user-selected region of the second visual representation or the third visual representation;

and wherein displaying the labeled mark comprises simultaneously displaying a separate labeled mark corresponding to each of mass values of the plurality of mass values.

15. The method of claim 9, wherein receiving the user-selected mass value comprises receiving a plurality of mass values and wherein displaying the labeled mark comprises simultaneously displaying a separate labeled mark corresponding to each of mass values of the plurality of mass values.

16. The method of claim 9, wherein displaying the labeled marks corresponding the selected mass on the plurality of sites on the distribution of m/z comprises identifying a maximum amplitude within a predetermined range in the distribution of m/z and displaying the labeled mark on the maximum amplitude for each site of the plurality of sites.

17. A method for interactively displaying mass spectrometry data, the method comprising:

receiving a data file comprising mass spectrometry (MS) data for a sample comprising a molecule;

simultaneously displaying a plurality of visual representations derived from the received data, the plurality of visual representations comprising;

a first visual representation comprising estimated or calculated masses from the received data file, a second visual representation comprising a distribution of mass/charge (m/z) values estimated or calculated from the received data file, and a third visual representation comprising a deconvolved mass spectrum estimated or calculated from the received data file;

receiving a user-selected set of mass values from one of the first visual representation, the second visual representation or the third visual representation, by the user selecting a range and automatically identifying a plurality of mass values from within the range; and

displaying a labeled mark corresponding to each mass value of the user-selected set of mass values on one or both of the first and third visual representations, and simultaneously displaying a set of labeled marks corresponding to each of the mass values at a plurality of sites on the distribution of mass/charge (m/z), wherein displaying the set of labeled marks corresponding to each of the selected masses on the plurality of sites on the distribution of m/z comprises identifying a maximum amplitude within a predetermined range in the distribution of m/z and displaying the labeled mark on the maximum amplitude for each site of the plurality of sites.